   .   : "  
  ?".    - ,   
 -  ?

        .

          , -
      .

       .    -
     ,      
  . ,      cat, dog  fox,
        .   ,
    ,        
  ,     .   ,
     ,    -
  .       
 : cat, dog    fox, -    -
   (    )    . ,
    fox,    dog,   -
   ( ,   ),  
 dog      fox.    -
 ,    .

 1                            2

  cat               fox
  dog               dog
   fox        dog
   fox   

 1    fox,    2,
  2       dog,  
 1.         , , -
,         .   -
         ,   -
    .

        ,  
    .     -
     ,    -
 .  -     .

/*

* cat lock -     dog

* (    dog   fox)

*/

 ,        
 ,       
       .

   .   Linux   -
 ,     
  .       .

                                       173